Ton S 97

All names: Gaia EDR3 2385336982642954496, PHL 475, TIC 9072192, 2MASS J23212639-2220219, USNO-B1.0 0676-01074635, Gaia DR3 2385336982642954496, MCT 2318-2236, GD 1648, Gaia DR2 2385336982642954496, GEN# +6.10160475, WD 2318-226, UBV M 43195, EC 23187-2236, GALEX J232126.3-222022, WD2318-226, Ton S 97

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Bergeron et al. 2021 MWDD H Gaia DR2 Stilism Koester et al. 2009 Koester et al. 2001 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 23 21 26.35 (0.05) 23 21 26.35 (0.1) 23 21 26.40 23 21 26.35 23 21 26.35 (0.05) 23 21 25.56
Declination -22 20 22.29 (0.05) -22 20 22.27 (0.07) -22 20 23.00 -22 20 22.29 -22 20 21.66 (0.04) -22 20 08.88
Spectral type DA DA DA DA DA DA
Effective temperature [K] 31112.0 (637) 26310.0 29851.0 (50) 30616.0 (100) 31645.0 (1074)
log(g) [cgs] 7.89 (0.1) 7.78 7.89 (0.01) 7.81 (0.02) 7.99 (0.04)
Mass [M] 0.594 (0.05) 0.525 0.56 0.641 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0079 0.0140
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 5.38 (0.05) 5.56 (0.09) 5.38 5.38 (0.05)
Distance [pc] 185.98 (2) 185.00 179.99 (3) 185.98 185.98 (2)
Composition H H
Proper motion (right ascension) [mas/yr] -6.483413627 (0.05) -6.383110918 (0.2) -6.483 (0.06)
Proper motion (declination) [mas/yr] -39.41574315 (0.06) -39.27811282 (0.1) -39.416 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.05 16.03
V magnitude 16.05 16.05
R magnitude
I magnitude
J magnitude 16.92 (0.1)
H magnitude 16.68 (0.3)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.17 (0.004) 16.19 16.17 16.17 (0.003)
BP magnitude 16.04 (0.004) 16.00
RP magnitude 16.45 (0.006) 16.46
Pan g magnitude 16.00 (0.004)
Pan r magnitude 16.40 (0.004)
Pan i magnitude 16.76 (0.002)
Pan z magnitude 17.05 (0.004)
Pan y magnitude 17.24 (0.005)
E(B-V) 0.008

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.